Monday 23 May

How it was decided

1. 01

   Aṅga

   Pūrṇimā runs from 11:17 on Mon 23 May to 13:39 on Tue 24 May.

   1910-05-23T03:17:02Z → 1910-05-24T05:38:48Z

2. 02

   Kāla

   Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 23rd, 11:51–12:39 on the 24th.

   madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

3. 03

   Rule

   Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 23rd and 48 of 48 on the 24th.

   Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

4. 04

   Tie-break

   Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

   priority: unstated → greater-coverage · margin 2029 s

5. 05

   Ruling

   Buddha Pūrṇimā, Baoding, 1910: Monday 23 May.

   confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Buddha Pūrṇimā 1910 falls on Monday 23 May. Pūrṇimā runs from 11:17 on Mon 23 May to 13:39 on Tue 24 May and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

Copy with citation

Who says what

Institutional rulings are recorded with a source address, and are never edited to agree.